Talking-machine.



A. H. WELKER.

TALKING MACHINE.v

AEPLIGATION EILED HAY 5, 1911.

Patented J'al. 5, '1915.

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2 SHEETS-SHEET 1.

INVENTOR wnNESs'Es =y ATTORNEYS A. H .WELKER TALKING MACHINE.

APYLIGATION FILED MAY 5, 1911 1,123,446. Patenteaam, 1915.

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@0kb-M4 .nl MM *UQYMM ATTORNEYS l UNITED salirse Le. anion;

.ALEXANDER H. wntnna, insensata', catrame, canapa.

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ments in' 'lalking--lvlachines, of which the following is aspecification. This in\ent1on relates to talking ma- '10 chines and''has reference particularly to 'vices employed lin such machines.

The objectv of the invention isto eEect lcertain improvements in theconstruction l of fdlr reproduction of the recorded sounds'is obtained.To this end the machine il so the. sound-reprodiicing'and amplifyingdeconstructed that the, reproduced sounds are sweeter, more mellowand'to a' greater extent free from foreign sounds than .isi-the casewith machines of the constructions heretofore commonly. employed.

rThe invention involves the use rality of pipes or resonance chambersarranged in cooperation with the sound-conveying and amplifying passageof the inachine that the sound-wavespass over or into the open endsofthese pipes. vpipes or resonance-tubes vary in construction as totheircross-sectional dimensions and as to their length; also, some ofthe pipes 'preferably have their ends distant from the sound-conveyingpassage closed while others have their distant ends open.-

lre'ferably, the resonance tubes are so arranged that they increase incross-section toward the exit end of the sound-conveying passage. lVithresonance tubes so arranged,

I have found in practicethat results are obtained whichv are farsuperior to those -conimonl y obtained heretofore, the superiority beingin *the sweetness and purity of the reproduced sounds andalso inv theirincreased volume. l The invention preferably employed in atalkingmachine of the type now com- Amonlyv known as a hornless 'which vthesoundfconreying v passage #formed within the cal'rinet oi the machine.

..150 In machines of-this type7 it has been'lcommon vheretofore to makethe turns in the sound-conveying passage curved so that thev Y ,sound'waves-will .pass 'the more readily therethrough. In my; vimproved.machine,

- Specicationof .Letters Patent.

. theopen ends of the talking machines whereby a' more faith- -ofthe.machine is niouired. The

, is mounted upon the end of Isage l0 isa sound-refiectm'l machine, inv4v the casing tothe -front wall thereof.

A and horizontally toward Patented Jan. 5,1915,

vApplicaties mea my 5. 1911. serial No. 625,143.

instead of proif'iding such curves throughout.l

the sound-conveying passage, I employ 'atv one of the turns inthepassage a reflector .for sound-wares upon which those' Waves impinge andby which 'they 'are deflected` in the desired direction.

Vith such' a res..

Hector the sound-waves may 'be readilyv dif. 'i

rected in' suchmanner that they will enter, resonance tubes a't the?ldesired angle.

l have illustratedthe preferred embhdi inentof my invention -in theaccompanying drawings 1n which- 1. Q L

l .Figure l is a central section ofa'machlne' embodying myinventi n,Fig. .Pais a horizontalv sect-ion through the sound-conveys -J ingpassage aboie the ends of the. resonance tuhes and Fig. is a front Viewof the upper portion of the machine. l

-Beferring to these drawings; l is the casing of the machine7 preferablyof rectangular formand having the top thereof a hinged cover Below thiscover is a horizontal partition 3 to the under side of which is securedthe motor eladapted to drive the vertical shaft upon which vtheturn-table 5 This turntablc'sustains and rotates a sound-record G ofdisk forni with of the sonnd-reproducer 7.

a. tapering tonearm 8 'whose opposite end is deflected downwardly and ispivotally mounted upon a suit-able bearing 9 secureailfupon the parti@tion 3. 4

vWithin the casing lis a passageway 10 coirnnunicating with thepiyotedvend of the tone-arm 8 and extending downwardly therefromf' At thelowerend of this pas@ made of glass, though-it'may of -wood or any othersuitable material. This reflector is preferably positioned against' therear wall ofthe casing l and horizontally therein.

'the sound-wares is'extended hy a passage 13- disposed'horizontally 'andleading from the' disposed The passage 10 for reflector vll at therearof casing through This passageway 13 -is enlarged both the front ofthemachine as shown. y l

plurality of pipes or resonance 'tubes are combined with the 'partsabove dewhich coacts the stylus This repro'ducer 1l p'referdilyl also bemade;v

.vertically A scribed, these being so disposed that their I vendsproject into the passageway for the soundwaves. Preferably the tubesare-so arranged that the sound-waves are deflected upon the ends of thetubes so that more or fless of the sound-waves willenter the tubes.

1n the drawings a plurality of resonance tubes 14 are shown each havingone end eX-4 tending through an opening 'in the partition largest.

opposite ends of the'tubes 12, these ends of the tubes being open. The14 are closed and these ends maybe turned at a right-angle one ormoretimes so-that the tubes will be disposed more compactly. The tubes14 are preferably of vary-ingcross-sectional areas, those adjacent tothe outer end of the soundconveying passage'l being preferably theNearjthe-inner end of the passage 13, the resonance tubes preferablyhave their lower ends open as shown at 15 in The surfaceofnthe reflector11. is accurately formed with respect to the relative positions of thereflector yand the open ends of the resonance tubes 14 and 15. Theformation in this respect is vsuch that thel sound-waves passing throughpassage 10 the reflector 11 through the passage-1 3 downwardly slightlyupon the en dsofthe resonance more or less of the sound-waves pass intothe sound-tubes and cause sympathetic vi# bration thereof.

The sound-waves pass out from the casing 1 through double doors 16hinged to the side walls of an :opening provided in the I lio positions.

Y about the tubes 14 into communication with the exterior of the whichare superior in the purity and front wall of casii'i'g 1.\ Anauxiliarydoor 17. may be provided if desired turning on a horizontal faxis and being within the doors 16 when the parts are in theclosed rlhefront wall of the casing be'- vlowY the doors-' 16' may be provided'withdoors, as shown. at

and 15 may be thrown casing l.

' The operation of the mechanism con* structed as above described willbe readily understood. In practice Ihave found that with thisconstruction volume of the reproduced sounds to those obtained with.machines of this type as now commonly constructed.

Having described my invention,

said vpassageway with opening into the same,

tubes 14 and 15 so that 'said passageway with 18, so that the spacetubes being nested results are obtained what 1 claim as Anew therein anddesire to secure by Letters Patent of the United States is:

1. A talking machine comprising a casing, a sound reproducer therein, aforwardly-directed vsound-amplifying passageway extending through saidcasing and connected to said reproducer, and a plurality of resonancetubes located within the casing `and opening into said'passageway, saidtubes being of different cross-sectional area and arranged so thatthecross-sectional area and length of the tubes increase fromthe rear ofthe casing toward the exit end' of said passageway, the cross-sectionalarea of said passageway also increasing from` the rear toward the exitend thereof, substantially as set forth.

:2. A talking machine comprising a casing, a. sound ieproducer therein,a forthe longer tubes bent angularly about the lower ends ofthe shortertubes, substantially as set forth.

3. A talking machine comprising a casing', a sound' reproducer therein,a forwardly directed horizontally disposed soundamplifying passagewayextending through said casing and connected to said reprod-ucei', and aplurality of vertical rescnance tubes located within the casing belowtheir` upper ends opening into the same,

with the smaller tubes to together with the lower ends of the longer therear, substantially as set forth.`

This specification signe s and witnessed this 24th day of April, 1911.

ALEXANDER vH; WELKER Witnesses:

ARTHUR B. PoLLoGK, J. A. SELLEN.

toward the upper and cross-sectional areas said tubes being of variouslengths and cross-sectional area-s,

the rear, and said 10G tubes bent angularly toK

